Claude/update docs roadmap f zd2 j (#2872)

* docs: update all four documentation guides and mark Q2 complete

- ai-native-services: add WithMCP one-liner, standalone gateway,
  WebSocket client example, and OpenTelemetry observability section
- mcp-security: add OTel distributed tracing, WebSocket authentication
  (connection-level and per-message), DeniedReason audit field
- tool-descriptions: add manual overrides with WithEndpointDocs and
  export formats section
- agent-patterns: add LangChain/LlamaIndex SDK pattern and standalone
  gateway production pattern with Docker example
- Update roadmap: mark Q2 documentation as complete, Q2 at 100%
- Update status: reflect all recent completions, shift priorities

https://claude.ai/code/session_01GkduEhcrqcG45rdfYh8dAc

* feat: add agent demo example and blog post

Add examples/agent-demo with a multi-service project management app
(projects, tasks, team) that demonstrates AI agents interacting with
Go Micro services through MCP. Includes seed data and example prompts.

Add blog post 4 "Agents Meet Microservices: A Hands-On Demo" walking
through the example code and showing cross-service agent workflows.

https://claude.ai/code/session_01GkduEhcrqcG45rdfYh8dAc

* feat: enable multiple services in a single binary

Remove global state mutations from service and cmd option functions so
that configuring one service no longer overwrites another's settings.

Key changes:
- service/options.go: remove all DefaultXxx global writes from option
  functions; newOptions() now creates fresh Server, Client, Store, and
  Cache per service while sharing Registry, Broker, and Transport
- cmd/cmd.go: newCmd() uses local copies instead of pointers to package
  globals; Before() no longer mutates DefaultXxx vars
- cmd/options.go: remove global mutations from all option functions
- service/service.go: export ServiceImpl type for cross-package use
- service/group.go: new Group type for multi-service lifecycle
- micro.go: add Start/Stop to Service interface, expose Group and
  NewGroup convenience function
- examples/multi-service: working example with two services

https://claude.ai/code/session_01GkduEhcrqcG45rdfYh8dAc

* docs: highlight multi-service binary support

Add multi-service section to README with code example, update features
list, add to examples index, and note in status summary.

https://claude.ai/code/session_01GkduEhcrqcG45rdfYh8dAc

---------

Co-authored-by: Claude <noreply@anthropic.com>

examples/README.md

@@ -34,6 +34,19 @@ cd web-service
 go run .
 ```
 
+### [multi-service](./multi-service/)
+Multiple services in a single binary — the modular monolith pattern:
+- Isolated server, client, store, and cache per service
+- Shared registry and broker for inter-service communication
+- Coordinated lifecycle with `service.Group`
+- Start monolith, split later when you need to scale independently
+
+**Run it:**
+```bash
+cd multi-service
+go run .
+```
+
 ## Coming Soon
 
 The following examples are planned: